Knockdown wheel.



J. B. STRIETELMEIER.

KNOGKDOWN WHEEL. APPLICATION FILED MAR. 10, 1913.

1,079,305. Patented Nov. 18, 1913.

2 sums-sans: 1.

J. B. STRIETELMEIER,

v KNOOKDOWN WHEEL. APPLICATION FILED MAR. 10, 1913.

Patented NOV. 18, 1913.

p SHEETS-SHEET 2.

JOHN E. STRIETELMEIER, OF CINCINNATI, OEIO,

OFFICE.

assrenon TO THE IDEAL WHEEL COMPANY, OF CINCINNATI, OHIO, CORPORATION OF OHIO.

KNOCKDOWN WHEEL.

Specification of Letters Patent.

Patented Nov. 18, 1913.

Application filed March 10, 1913. Serial No. 753,347.

To all whom it may concern:

Be it known that I, JOHN E. STRIETEL- MEIER, a citizen of the United States, residing at Cincinnati, in the county'of Hamilton and State of Ohio, have invented certain new and useful Improvements in Knockdown Wheels, of which the following is a specification.

This invention relates to improvement in construction of wheels, and it deals more especially with the type of gvheels having resilient spokes. I

One object within the contemplation of this invention is to render available an improved formation of the outermost extremity of the s oke" elements, whereby the same have a uni orm or continuous effective seating surface at the point of attachment tot-he rim, notwithstanding slight irregularities in the contacting elements,'to the end that fracture strains will not be engendered by the clamping pressures, thus reducing the liability of breakage to a minimum.

Another object is to create a clamping structure of a very simple nature and composed of but few parts, whereby the spring elements will be very'efteeti'vely secured to the rim, While preferably enabling said elements to be detached readily should a replacement thereof be occasioned by spring breakage.

Another object is to devise a means, whereby a/wheel structure embodying spring spokes of the character and relationship defined by my oopending application, Serial No. 720,521, may enable the adjacent springs of each adjacent spoke to radiate from the hub, while spaced apart a slight distance just permitting a polishing fabric to be inserted therebetween for the purposeof removing grit and keeping the parts clean.

This invention also proposes a fastening arrangement for the springs at the hub, which will be composed of but few parts permitting operation in a simple yet positive manner by nuts or the like to promote the demounting or assembling of individual spokes.

Another object is to devise a hub construction suitable for a wheel of the nature (lisclosed, and which will consist of a hubstructure adapted to be permanently retai-ned on the axle, and a cooperating dctachable hub-structure of a very simple nature, forming essentially a demountable wheel-hub adapted to be received in interfitting relation upon the axle hub-structure and enabled to be secured thereto by a positive acting single element.

Another object is to devise a wheel constructicn that will be composed throughout of relatively few elements, each simple indesign and so formed as to be capable of be ing inexpensively manufactured, and each so related to the others that they may readily assembled to form adurableand well-organized wheel.

Other objects will be in part indicated in the following descri tion', and in part rendered obvious therefi om in connection with the accompanying drawings. I

This inventlon accordingly consists in the features of construction, arrangement of parts, and relationsof elements, all as herein more particularly described, andin the extent of modification and range of equivalency indicated by the accompanying claims.

To adequately disclose this invention to those skilled in this art, it will srfiiceto expose the underlymg essentials by way of one embodiment thereof, and to that end drawings of the form now preferred have been annexed and will be described in detail, and in such drawings like characters of reference denote corresponding parts throughout all the views, of which:

Figure 1 is a side elevation partly in sec.- tion, showing one complete spoke in its relationship to the other features of, the wheel construction. Fig. 2 is a sectionhg long a ra-- dial'axi'al plane indicated by 22 of Fig. 1, showing further features. Fig. 3 is a perspective of .an isolated clip in securing the springs to the demountable hub through the .agencyrof a clampin block. Fig. 4 is a fragmentary perspect1ve,'s lowing the construction of the demountable hub. Fi n wlii el with all'elemcnts inplace save the springs, but with the retainlng collar not screwed up tightly. I

Continuing now by way of a more detailed description of the parts of construe tion and essential characteristics of this-invent-ion, it is to be observed that while the 5 is a top plan view of the'hub of the such as is-used following description will in many specific respects refer solely to the annexed drawings, it. is to be understoodt-hat the same is employed in an explanatory sense, and not for the purpose of limiting the invention to every specific feature enumerated.

The claims herein made are in part based on structural'improvements growing out of and requiring conjoint use with the inventions disclosed and claimed in my copending applications Serial Nos. 720.521 and 734,123; and in part are also based on features capable of use independently of said inventions.

Referring now to Figs. 1 and 2, numeral 1 indicates a wheel-hub which, as here shown, has a ball-bearing or other anti-friction mounting on the axle 2, on which it is ordinarily permanently retained by means of the nut 3 inclosed by the hub-ca 4. It will, of course, be understood that t e axle hub 1 may be permanently keyed to are demountable wheel hub structure comprises a base member 8 having an annular shape,

. and having its inner periphery beveled at an angle corresponding with that of the beveled outer periphery 5 of the axle-hub member 1. This enables the respective members to telescope freelyand to come to a snug tight fit in the final position. Risingfrom the rear edge of the member 8 is an integral annular flange, Q'that terminates in an overhanging annular lip 10, preferably provided with a spaced series of notches 11, and having an under-beveled face 12. This flange 9 also has a spaced series of apertures 13 for receiving the shanks of bolts 14 having ,heads 15 that interfit in the notches 7 "of the flange 6. These bolts in this arrangement have a two-fold function. 1'. e. first, to retain the spokes on the wheelhub, and second, to prevent the wheel hub from slipping around the axle hub, which latter is accomplished by reason of the interfi-tting of the heads 15 of the bolts in the spaced apertures 7 in the flange 6.

By thebo'nstruction herein proposed, theinturned flanges (infect-pf the springs are arranged to find a bearing radially outside of the bolts 14, e., at a greater distance from the center of the wheel. As a matter of structural convenience, this is attained by means of an annular platform 16, which I is L-shaped in cross section: and rests at one end on a small shoulder rojectin from the flange 9 of the wheel-iiub memdmr 8, and it has an annular flange 17 seated on the outer circumferential margin of said wheel-hub member 8; said flange having a series of apertures 18, through which the bolts 14; project.

The resilient spokes proposed by this invention are etal-shaped, and are preferably designed in accordance with the disclosures of my aforesaid application, Serial No. 720,521, and preferably each spoke is formed of two springs 19 and 20, arranged in converse symmetrical relation to the bisecting radius of the spoke. These spring sections enter the hub along radius lines and have portions bent in a circumferential direction, and which preferably terminate near the center line of each spoke. As indicated'by 21, these foot-like flanges are supported directly upon filling strips 22, which may be constructed of a softer metal than the steel used in the springs, such as brass or copper. These filling strips 2-3 are shaped like a shallow channel-lair, so that their marginal portions will extend radially for a short distance and constitute spacers for keeping the adjacent back-toback spring spaced slightly apart at the hub, as shown by Fig. l, to permit the insertion of a cleaning or polishing fabric. It is to he understood that while these filling strips 22 may he formed integral with a part of the wheel-huh, such as the annular )latform 1(3, nevertheless, they are preferably in the form of separate pieces since thereby the parts are given a somewhat greater degree of latitude, or self-adjustment to equalize strains when the chuuping elements are tightened.

A clamping plate 23 having its ends beveled and in shape conforming to a section of a hollow, cylinder, is arranged to overlie and rest directly upon the inturned flanges or feet 21 of the springs. A filler 24 of relatively soft material such as brass. fiber or the like, may line the inner face of each clamping plate 23. The inner beveled end of each clamping plate takes under the beveled flange l0, and its outer beveled end is engaged by the under-beveled lip 25 projecting from the clip 26, which is preferably sector-like in shape and has an aperture 27 through its body portion and through which the projecting end of the bolt 14 may pass. The lip 25 is sufliciently wide circumferentially to completely till the space between the springs 19 and 20 of eaclrspoke at the hub, and it will be noticed Jthat such'lip is narrower than the body portion of the clip, leaving open notches 28 for The teferably enter y the annular receiving the edges of the springs. edges of the springs also the notches 11 provided flange 10, and in this way the springs are positively restrained against creeping relative to the wheel-hub to which they are. se

cured.

To hold the wheel'hub as a unlt demountably on the axle-hub, an annular follower 29 is screw-threaded at 30 to the axle hub member 1, and has an overhanging annular wl1eel-hub in place.

flange 31 adapted to abut some portion of the wheel hub, preferably the beveled edges 32 of the clips 26, and thereby hold the By this arrangement, the series of nuts 33 which individually secure the clips in place are inclosed against mud; the entire hub has a smooth finished appearance free from projections, and yet the rim may be used whether said spokes are formed of two radial spring portions which meet together in overlapping'ends at the rim, or whether the spokes are formed of two radial spring portions that extend continuously in an unbroken connection around the attaching loop, as in the case of a spoke formed of a single spring bent into the shape shown by the drawings and having its ends butt together at the hub. Preferably, however, each spoke will be formed of two separate springs, each secured at the rim and hub respectively, since in this way it is somewhat easier to manufacture the springs, to temper them, and they may be carried more compactly and replaced with less waste of material in case of fracture.

Tests under working con ans show that springs of the character herein specified display a greater tendency to crystallation and fracture at or adjacent their point of attachn'lent to the rim than elsewhere. The causes-for this are rather profound, but I have succeeded in e'fl'ecting a very simple improvement that better overcomes these difliculties than anything hereto-fore known to me. The one spring 19 has its end rounded off in a progressive curve free'from sharp deflect-ions, said curve being concaved toward the wheel axis and terminating in a slightly projecting portion 34 that reinforces the contacting portions of theadjacent spring 20 at the point of deflection adjacent the retaining clampingplate at the rim. The adjacent spoke spring 20 has its comprises a 'toward the axis along :eled face 40. The

and force the spoke and advantages end curved convexedly outward so as to overlap and closely fit about the adjacent portions of the adjacent spoke spring 19. The overlapping portion of the spring 20 externally seats into a correspondingly ,i'haped recess in the rim 35 of the wheel,

and such recess is preferably lined witli brass or fiber, as indicated by 36 to provide a better seating surface.

The clamping device hereproposed consists of two L-shaped parallel movement clips, the one having its foot disposed along the rear edge of the rim,.and its leg on the outer periphery of the rim, and the other arranged conversely. The first-mentioned 'clip is preferably permanently secured to the rim, and is here indicated by 37, and it radial portion 38 that extends the inner side of the rim, and it terminates in an outwardly turned flange 39, providing an under-bevpermanent clip 37 also provides, preferably, a portion 41 that is countersunk in the outer periphery of the rim, and extends toward the front side .thereof and at its front extremity it provides a beveled face 42 in parallelism with the aforesaid beveled face 40. The desired angularity'of this face may be secured in a very simple manner by turning down the end portion of the clip 37 in the way shown,

so that such portion also tends to lock the clip against detachment relative to the rim.

1e cotiperating detachable clip is indicated by '43 and it comprises a portion con-' stituting a clamping-plate 44 terminating in a beveled end adapted to coact with the bodies a side portion 45 terminating in an :under-beveled lip 46 adapted to coact with the beveled surface 42. It will be perceived that the detachable clip 43 is freely separable by a movement away from the wheel transversely to .the plane thereof, and that if it be forced in the opposite direction it will move in parallelism with the layers of springs so as to clamp the latter with a uniform pressure. This movement is secured by means of a bolt 47 that passes through an aperture 111 the non-removable cllp, then a through an aperture in the rim and its free enlongated .aper- 'underbevel of the flange 39, andit also em- I perceived that this inventers Patent of the United States of doing so in an exceedingly simple manner.

In the light of this disclosure, those skilled in mechanical arts will be enabled to utilize matters of current knowledge in modifying details of this invention and in adapting the same to meet the requirements of various circumstances, without however departing from the features and combinations which from the aspect of the prior art will be found to constitute true characteristics of this invention, and such constructions are therefore to be'regarded as falling within the scope or range of equivalency of the following claims.

Having thus described my invention, I claim as new and desire to secure by Let- 1. A resilient wheel of the nature disclosed combining a hub, a plurality of looped flat-spring spokes radiating from said hub, a rim providing seating surfaces for the extremities of said spokes, a member secured to said rim providing a pair of parallel beveled faces, the one being adjacent the back edge of the inner periphery, and the other being adjacent the front edge of the outer periphery of said rim, and a cooperating L-shaped clip having beveled faces engaging those above mentioned, whereby said clip will move in parallelism with said member to clamp its associated spoke to said rim.

2. A resilient wheel of the nature disclosed combining a rim, an L-shaped member permanently secured thereto, a detachable L-shaped member arranged conversely to the former, to form an open rectangle, inclosing a section of the rim, a flat spring forming a spoke element also inclosed within said open rectangle, and means for drawing said two members together to clamp said spring flat-wise against said rim.

3. A resilient wheel of the nature disclosed combining a rim, means providing parallel beveled surfaces at diagonally opposite points of a transverse section of said rim, a flat spring having a portion seated flat-wise on said rim, a member having beveled faces coacting with the aforesaid beveled surfaces and providing a portion for sclam ing said spring to said rim, and screwthrea ed means for moving said member laterally relativelyto said rim whereby it will be forced into.- clamping relations with said s ring by said beveled faces.

4. resilient wheel of the nature disclosed combininga rim, a member extending radially inward along the back side of said rim and providin at the inner periphery of said rim a lip aving anv under-beveled face, anL-sha ed clip having a portion extending paralle' with the ax e ofsaid wheel, and terminating in a beveled endengaging said lip, s aidportipn bending at said sockets to prevent said w turning rrelatively tosaid axle hub, a

right angles and extending along the front side of said rim and terminating in a beveled face contacting a correspondingly beveled surface provided by said rim, aflat metal spoke element engaged by said clip and means for drawing said parts together.

5. A resilient wheel of the nature disclosed combining a hub, a rim, an equispaced plurality of loop-like spokes each providin spring portions having concavedl'faces an convexed backs, said portions being spaced widely apart face-to-face, but spaced only slightly apart back-to-back, and having flange-like feet extending toward one another on the periphery of the hub, a radially movable clamping-block resting on said feet between the corresponding spring portions, spacers alternating in succession withsaid clamping-blocks around the periphery of said hub to separate the same, and means for drawing the clamping'blocks radially inward to cooperate with said hub in clamping-said flange-like feet.

6. A resilient wheel combining a hub, a rim, a plurality of loop-like spokes each providing conversely arranged spring portions havingconcaved faces having retaining flanges and spaced widely apart face-toface but only a slight distance apart back-toback, spacers contacting between the backto-back portions, movable clamping blocks between the face-to-face portions and cooperating with said fianges, and means for moving said clamping-blocks relatively to said hub, to bind said portions in place.

7. A resilient wheel of the nature disclosed combining an axle hub having an annular flange provided with a circumferentially spaced series of sockets in the side wall thereof, a-wheel hub adapted to telescope the axle hub and having a series of bolts extending transversely therethrpugh, and having their heads adapted to enter said sockets to prevent said wheel hub from turning relatively to said axle hub, a plurality of springs of sheet-metal disposed edgewise to the plane of the wheel radiating from said wheel hub forming spokes for the wheel, means for attaching said spokes to said wheel hub throughl the agency of said bolts, and means for retaining said wheel hub. against axial movement on said axle huh. I i

' 8. A resilient wheel of the nature disclosed combining an axle hub having an annular flange provided with a circumferentially spaced series of sockets in the side Wall thereof, a wheelhub adapted to telescope the axle hub andhav in a series of bolts extending transversel therethrough, and havingtheir heads a a ted to enter lieel hub from lurality of; springs radiating from said w eel V hub. forming spokes for the wheel, means inturned foot-like portion seated on said an under-beveled surface,

for attaching said spokes to said wheel hub through the agency of said bolts, and a collar having a screw-threaded mounting on said axlehub adapted to bear against the outer side of said wheel huh and obstructits removal from said 'axle'hubi 9. A resilient wheel of the nature disclosed combining an axle hub having an annular flange provided with a circumferen- .tially spaced series of sockets in the side wall thereof, a wheel hub adapted to telescope the axle hub and havin a series of bolts extending transversely t eiethrough, and having their heads adapted to entersnid sockets to prevent said wheel hub from turning relatively to said axle hub, a plurality of springs radiating from said wheel hub forming spokes for the wheel, means for attaching said springs to said wheel hub, nuts threaded to said bolts for operating said means, and a-collar mounted on said axle hub adapted to prevent axial relative movement of said wheel hub and having an annular recess in its inner side adapted to conceal said nuts.

10. A resilient wheelof the nature disclosed combining an annular hub having at one end an annular flange providing an under-beveled surface, and having an aperture in its side wall, a bolt passing through said aperture parallel with the axis of said hub, a springseating member arranged at a greater radial distance from the hub axis than said bolt, a flat spring arranged edgewise to the plane of the wheel and having an member, a clamping-block having beveled ends engaged at one end by said hub flange, and a clip adapted to be urged by pressure derived from said bolt to engage the other end of said clamping-plate and retain, said spring by means of its foot-like portion.

11. A resilient wheel of the nature disclosed combining a hub member having at one end an uprising annular flange having a perforation in its side wall and providing a bolt extending parallel with the axis and engaging said hub member through said perforation, a springseating peripheral surface being provided at a greater radial distance from the axis than said bolt, a flat spring having anginturned i'oot-like extension seated on said peripheral surface, a clamping-plate overclosed combining a hub-member providing an external eriphery and a flange at one.

end uprising eyond said periphery and.providing an under beveled surface, a bolt extending parallel with the axis of said hub radially nearer the axis than the said periphery of said hub, a fiat spring having an inturned foot-like portion seated on said periphery, a clamping-plate engaged at one end by said flange and overlying said footlike portion, and a clip retained by said bolt adapted to. bear against the other end of said clamping-plate to retain the same in clamping relation with said spring.

13, A resilient wheel of the nature disclosed combining a hub, a rim, and an equispaced series of loop-like composite spokes alll'adiating in the same plane and each consisting of homologous forward and rear portions formed of wide sheet metal conversely arranged edgewise to the plane of the wheel, and rigidly clamped to the hub at points Widely separated circumferential-1y whereby each spoke ln; a base wide both peripherally and axially, said portions emerging from the hub along a radius line and immediately progressively curving away from said radius line toward the center-line of their spoke, said loop-like spokes being slightly separated from one another atthe hub to form narrow spaces between the rear radial portion of each. loop-like spoke and the forward radial portion of the following loop-like spoke, spacers in saio narrow spaces, clamping blocks between the widely separated portions, andmeans operative independently of said spacers for securing said clamping blocks to said hub.

14. A wheel of the nature disclosed combining a hub-member, a spaced series of flat spoke springs arranged edgewise to the plane of the wheel and having concaved faces spaced widely apart but separated back-t0- back only a relatively slight distance, spacers interposed between the back-to-back springs, a series of blocks alternating with said spacers and each arranged between two face-to-face springs, and adjustable meansfor'engaging the extremities of said blocks and adapted adjustably to close said blocks toward the center of the hub whereby clamping pressures may be exerted on the two springs and the intervening spaces between each two blocks taken in succession.

15. A resilient wheel of the nature disclosed combining an inner hub-member, a telescoping outer hub-member, a series of resilient spoke elements radiating from said outer hub-member, a series of clamping blocks detachably securing said spoke elements to said outer hub, a retaining member secured to said inner hub member-and si multaneously engaging all of said clamping blocks and also serving to restrain axial movement of said outer hub-member on sald inner hub-member, and a rim to which said spoke elements are secured.

16; A resilient wheel combining a rim,- and.

a hub, a detachable L-shaped member having one leg extending in an axial direction over 60 bining a felly,

telly,

' spoke-elements,

the periphery of one of said parts and having its other leg extending radially along the side of said part, an element projecting from theet-her side of said part, and havin a wedge-engagement with the one le of sai member, the othe leg of said mem er hav ing a wedge engagement at the first mentioned side of said part, means for translating said L-shaped member whereby it may have a parallel vclamping movement, and a flat spring extending between the one leg of said member and the periphery of said part, whereby it may be clamped thereto.

17. A spring wheel ofthe nature disclosed combining ahub, a telly, a clip comprising a cross-bar portion arranged transversely to the plane of the wheel and an integral side portion formed at right angles to the crossbar portion and parallel with the median plane of the wheel,

a loop-like spoke of spring metal having a forward and a rearward strip curved to present concaved faces opposite each other and entering between said clip and felly from opposite directions and intcrfitting in overlapping relation with one another, a bolt securing the side portion of said clip to the widely spaced points to the hub.

18. A spring-wheel of the naturedisc-losed combining a hub having screw threads 30 adjacent one end, a plate 9 adjacent the other end, a movable part 26,21 wedge-block 23 intervening between said plate and said part, a bolt 14 extending in an axial direction from said plate into saidpart, a member 29 engaging said hub screw-threads and bearing laterally against said part, a felly, and resilient flat strips extending along opposite sides of said wedge-block and curving to meet the telly radially opposite the same and forming a loop-like spring-spoke.

19. A wheel of the nature disclosed combining a telly, a series of sheet-metal spring spoke-elements, a bub-member providing a flange 9 rigid therewith having a series of equi-spaced notches 11 extending radially and adapted t-o-receive radial portions of the ed to intervene between each pair of separated spoke elements to space the same, said part providing a face flush with the wall of one of said notches and keyed against rotation on said hub-member by the coaction of said spoke elements with the walls of said notches, and a member 26 detachably mounted with relation to the hub adapted to retain said separable part against displacement in an axial direction.

- 20. A wheel of the nature-disclosed 'coma hub-member having an overhanging flange provided with series of radial slots, two resilient sheet metal spoke elements arranged backto-back emerging extending at one side of and and means for securing said strips at a separable part 23 adaptradially emerging from each slot and curving apart and each meeting the felly at a point radially midway its slot and the adhub and providing a conical wedge-seat 32, jacent one, a ring 29 screw threaded to said and means for utilizingsaid wedge-seat for maintaining the position of said hub member-and simultaneously wedging said spoke elements radially toward said hub. 22. A wheel of the nature disclosed combining'a telly, a hub having-a shoulder 6, a spoke seatinganember concentric therewith in end abutment with said shoulder and having a series of radial slots 11 each adapted to accommodate two spoke elements, a pair of resilient sheet-metal spoke elements radially emerging from each slot and curving apart and each meeting the folly ata point radially midway its slots and the adjacent one, means for wedging said spoke-elements in rigid relation with said spoke-seating member, and bolts cooperating with said shoulder and passing in an axial direction through said member to operate said means.

23. A wheel of the nature disclosed combining a felly, a hub having a'shoulder 6, a'

spo e-seating member 8 mounted thereon and restrained against endwise movementin one direction by said shoulder, said member providing a series of radial slots 11, a resilient sheetmetal spoke element radially emerging from each slot and curving backwardly to meet the rim at a point radially midway its slot and the next adjacent slot' a part 26 arranged at the outer end of sai member and providing an under wedge-surface 25, a bolt for drawing said part toward said member in an axial direction, and means for utilizing said wedge-seat for wedging said spoke elements radially toward said hub.

24. A wheel ofthe nature disclosed combining a folly, a hub-member 8 having a radially pro'ecting annular flange 9 providing a series 0 radial slots, sheet-metal resilient spoke elements having radial portions emerging from said slots and curving into a connection with said felly, means 23 for spacing said elements arranged at one side v registry with said slots and receiving adjacent radial portions of said spoke-elements and keyed thereby against rotation, means arranged on the side of said first-mentioned means remote from said flange operating to position said first means and providing a beveled face adapted to produce clamping pressures effective to retain said spoke elements against outward movement, and a bolt extending in an axial direction through said flange and engaging said last mentioned means. 7

25. A wheel of the nature disclosed combining a "Telly, a hub-member, an annular plate 9 having an inturned Wedge-like projection 10 provided at one side of said hubmember, a complementary part 26 arranged at the other side of said hub-member and having a Wedge-like projection 25 directed toward said plate but separated therefrom, an annulus 16 seated on said hub-member between said plate and part and adapted to constitute a spoke-seating element, a series of loop-like spokes formed of spring metal strips radiating from said annulus, means for utilizing said wedge-like projectionsfor retaining said strips in seating relation with of loop-like spokes strips radiating from sald annulus, means said annulus, and adjustable means for drawing said part toward said plate.

26. A wheel of the nature disclosed combining a felly, a hub-member, an annular plate 9 having an inturned wedge like projection 10 provided at one side .of said hubmember, a complementary part 26 arranged at the other side of said hub-member and having a wedge-like projection 25 directed toward said plate but separated therefrom, an annulus 16 seated on said hub-member between said plate and part and adapted to constitute a spoke-seating element, a series formed. of spring metal for utilizing said wedge-like projections for retaining said strips in seating relation with said'annulus, anda bolt extending in an axial direction through said plate, annulus, and part and adapted to clamp them to gether.

In testimony whereof, I have hereunto set i my hand.

JOHN E. STRIETELMEIER. Witnesses: I

OLIVER B. KAISER, CLARENCE B. FOSTER.

Copies of this patent may be obtained for five cents each, by addressing the. Commissioner oi Patents,

Washington, 11. c. M 

